mcelroy



(No Model.) 2 sheets-sheet I. D. S. MOELROY. RAILWAY TRAIN SIGNAL.

No. 438,084. Patented Oct. 7, 1890.

ATTORNEYS (No Model.) 2 SheetsShe 2.

D. S. MGELROY. RAILWAY TRAIN SIGNAL.

No. 438,084. Patented Oct. 7,1890.

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UNITED STATES PATENT OFFICE.

DANIEL S. MCELROY, OF NEW YORK, N. Y.

RAILWAY TRAIN-SIG NAL.

SPECIFICATION forming part of Letters Patent No. 438,084, dated October7, 1890.

Application filed December 7, 1889. Serial No. 332,946. (No model.)

To all whom it may concern:

Be it known that I, DANIEL S. MOELROY, of New York city, in the countyand State of New York, have invented certain new and useful Improvementsin Railway Train-Signals, of which the followingis a specification,reference being had to the annexed drawings, forming a part thereof, inwhich- Figure l is a side elevation of my improved signal box, showingthe same in an open position. Fig. 2 is a plan view with the top of thebox removed. Fig. 3 is a plan view of a box provided with twosignaling-plates, and Fig. 4c is a rear elevation of the same with theside of the box removed.

Similar letters of reference indicate corresponding parts in all theviews.

The object of my invention is to provide a signal-box for railwaytrain-signaling, which will be positive in its action, and which willsend a return-signal for each operation.

My invention consists in the combination, with a suitable lantern, of arevoluble plate, an electrically-operated escapement for allowing theplate to move through a given portion of a revolution, and a signalingdevice connected with the escapement of the plate for sending areturn-signal.

It also consists in the combination, with the signaling-plate andplate-operating mechanism, of an auxiliary plate arranged in the back ofthe box, and a light supported between the plates.

My present invention is an improvement upon a railway train-signal forwhich Letters Patent of the United States, No. 413,409, were granted tome on October 22, 1889.

The signal-box Ais provided with an opening a in one side thereof, andis furnished at the opposite side with a lamp 1), which is locateddirectly opposite the said opening a.

Between the lamp 1) and the front of the box containing the opening a isarranged a frame B, in which is journaled an arbor O, the end of whichprojects through the said frame toward the front of the box A, andcarries a plate D, provided with apertures c, in which are insertedwindows of different colors.

Onthe arbor O is mounted a pinion d, which is engaged by a spur-wheel Eon the shaft F,

the said shaft being provided with a propel ling-spring G, which causesthe wheel E to turn the arbor G. V

The plate D is provided with four arms e, and in the frame B is pivotedan armature= lever H, which carries the armature f within the field ofan electro-magnet I. The saidarmature-lever H is provided with the studg, which projects normally into the path of the arms 6, and forms adetent or stop for the said arms.

Upon the arbor G, adjoining the plate D,is secured a scape-wheel J,having four teeth 6', corresponding in position with the arms e.

The armature-lever H is prolonged beyond its pivot and provided withapin g, which is adapted to engage the scape-wheel J whenever thearmature f is drawn forward toward the magnet I, withdrawing the pingfrom the path of the arms 6. provided with a retractile spring h, whichre turns it to its normal position after it has been released from themagnet I. A contact-point K is secured to the box A in the path of theend of the armature-lever H, and the said contact-point and the leverare connected in an electric circuit including an alarm apparatus at thesignal-station, so that whenever the circuit of the magnet I is closedto release the plate B and give a signal, the contact of thearmature-lever H with the point K sends a return-signal, showing thatthe apparatus is operative.

In the apparatus shown in Figs. 3 and 4:- the arbor G is prolongedrearwardly and carries a plate D, provided with windows, as in the othercase. In the present case an incandescent electric lamp b' is placedbetween the two plates so that its light may be seen through the platessimultaneously. Any suitable light may be used in lieu of the electriclight.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. In a railway traln signal, the combination, withthe plate D, provided with the apertures c and arms 6, of the scapewheel J, and the armature-lever H, provided with the pins 9 g,substantially as specified.

The armature-lever H is 2. The combination of the plate D, providedvided at its outer end with a pin to engage with arms 6, the scape-wheelJ, the armaturesaid signal and prevent rotation of the shaft lever H,furnished with pins 9 g, the electrountil the magnet is energized, theopposite or magnet I, and the circuit including the arinainner end ofthe said armature-lever serving 15 ture-lever H and contact-point K,substanas a scape-lever to stop the rotation of said tially asspecified. signals, and a source of light common to both 3. Thecombination, with two signals havsignals, substantially as set forth.ing acommon shaft, and a clock mechanism DANIEL S. MOELROY. for rotatingthe shaft, of an electro-magnet, \Vitnesses: 1c and an armature-leverpivoted between its EDGAR TATE,

ends adjacent to one of the signals and pro- 0. SEDGWICK.

